One-bath one-step low-temperature dyeing of polyester/cotton blended fabric with cationic dyes via β-cyclodextrin modification

2018 ◽  
Vol 89 (9) ◽  
pp. 1699-1711 ◽  
Author(s):  
Wan Zhang ◽  
Xiaoqian Ji ◽  
Chaoxia Wang ◽  
Yunjie Yin
Keyword(s):  
Low Temperature ◽  
Cotton Fabric ◽  
Crosslinking Agent ◽  
Polyester Fabric ◽  
Curing Temperature ◽  
Cationic Dyes ◽  
Light Fastness ◽  
Color Strength ◽  
One Step ◽  
Grade 3

With the aim of polyester/cotton fabric one-bath one-step dyeing, polyester fabric low-temperature dyeing with cationic dyes was investigated based on β-cyclodextrin (β-CD) modification. After β-CD/citric acid (CA) modification, the hydrophilicity of the modified polyester fabric was improved obviously, which was demonstrated via moisture regain and contact angle, as well as wicking property. The optimal dyeing temperature and crosslinking agent were selected through comparing the color strength of the dyed polyester fibers. Modified polyester fabric obtained significantly enhanced color strength from 0.12 to 4 with a good leveling property when dyeing at 70℃ using CA as the crosslinking agent. β-CD modified polyester/cotton fabric displayed a K/ S value of 8.61, much higher than the value of 0.71 of the unmodified fabric with cationic dyes, showing a highly improved dyeing ability. The color fastness of β-CD modified polyester/cotton fabrics, including washing fastness, rubbing fastness, perspiration fastness and light fastness, are all over grade 3–4 when the curing temperature of 180℃ is adopted for β-CD modification, demonstrating that polyester/cotton fabric one-bath one-step dyeing can be realized based on β-CD modification.

Dyeing Properties of Chitosan-Sulfamic Acid Solution Treated Wool with Silane Coupling Agent

2011 ◽  
Vol 331 ◽  
pp. 377-381 ◽  
Author(s):  
Xue Mei He ◽  
Kong Liang Xie
Keyword(s):  
Low Temperature ◽  
Acid Solution ◽  
Crosslinking Agent ◽  
Sulfamic Acid ◽  
Weak Acid ◽  
Color Strength ◽  
Surface Appearance ◽  
Wool Fabrics ◽  
Wool Fibers ◽  
Higher Temperature

In this study, wool fabrics were treated with different concentration of chitosan sulfamic acid solution under using 3-glycidyloxypropyltrimethoxysilane (GPTMS) as a crosslinking agent. The structure of treated wool fabrics was investigated by SEM, DSC-TG. Treated wool fibers had a irregular surface appearance, showed the presence of amounts of Nano SiO2 and their aggregates deposited onto surface of wool fibers. The thermal properties were obviously enhanced. Treated wool fabrics is more stable in higher temperature than that of untreatment. Treated wool fabrics were dyed with weak acid red B, and dyeing behaviour were studied by means of by light reflectance measurements. The color strength (K/S value) of treated wool fabrics obviousily increased from 5.33 to 31.68 by comparison with the untreatment. As a result, it can be concluded that the chitosan sulfamic acid solution with GPTMS treatment could improve the weak acid red B low temperature dyeing on wool. Further, low temperature dyeing of wool fabrics with chitosan-sulfamic acid is safe, so the results obtained are quite promising as a basis for possible future industrial application.

scholarly journals Nano TiO2 Imparting Multifunctional Performance on Dyed Polyester Fabrics with some Disperse Dyes Using High Temperature Dyeing as an Environmentally Benign Method

2020 ◽  
Vol 17 (4) ◽  
pp. 1377 ◽  
Author(s):  
Alya M. Al-Etaibi ◽  
Morsy Ahmed El-Apasery
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Value Added ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Blue Dye ◽  
Color Strength ◽  
Polyester Fabrics ◽  
Self Cleaning ◽  
Dyeing Method

Polyester fabrics were dyed with prepared disperse dyes using the high temperature dyeing method. The dye exhaustion of the dye baths were compared to the low-temperature dyeing method in an attempt to study the proportion of the dye effluent solution that affects the environment. The dye uptake of the high temperature dyeing method (HT) of polyester fabric was compared with low temperature dyeing, hence (HT) increased the color strength of the investigated dyes by 309 and 265%. This means that the amount of dye present in the dye effluents by using the high-temperature dyeing method is almost non-existent, and this is reflected positively on the environment as these wastes pollute the environment. Post-treated polyester fabric was prepared through a two-step hot process after being immersed in a solution of Titanium (IV) oxide nanoparticle sizeTiO2 NPs (21 nm primary particle size) at 80 °C followed by curing at 140 °C. The treated fabric realized an optimum UV protection factor of 34.9 and 283.6 degrees. These fabrics also demonstrated a strong ability to improve the light fastness properties. Finally, the potential applications of such value-added fabrics as self-cleaning and antifungal activities were investigated. The results indicated that the treated dyed fabrics with TiO2 NPs endowed fabrics with the excellent self-cleaning of methylene blue dye. From the above, the treated fabrics with nano-titanium dioxide can be used in some promising fields, for example, medical ones.

Pigment printing of polyester fabric using a single step synthesized PDMS-modified polyurethane-acrylic/pigment hybrid emulsion

2021 ◽  
pp. 004051752110185
Author(s):  
Ziwen Xie ◽  
Xiaofei Yan ◽  
Jiawei Li ◽  
Chenkai Zhu ◽  
Dongming Qi
Keyword(s):  
Mechanical Properties ◽  
Miniemulsion Polymerization ◽  
Polyester Fabric ◽  
Air Permeability ◽  
Single Step ◽  
Thermal And Mechanical Properties ◽  
Color Strength ◽  
Latex Particles ◽  
One Step ◽  
Hybrid Latex

A novel, waterborne polydimethylsiloxane (PDMS)-modified polyurethane-acrylic (Si-PUA)/pigment hybrid emulsion was synthesized by one-step miniemulsion polymerization for the pigment printing of polyester fabric. The phase structure, hydrophobicity, and thermal and mechanical properties of the formed films with different PDMS contents from the hybrid emulsion were investigated. The results indicated that the pigment particles were uniformly distributed in the homogeneous phase polymer substrate without phase separation occurring between the PDMS phase and polyurethane-acrylic. The hydrophobicity and toughness of the Si-PUA/pigment hybrid latex films gradually increased with the increase of PDMS content. Moreover, the obtained hybrid emulsion was used as a self-curable hybrid pigment that was applied to polyethylene terephthalate fabric for pigment printing. This showed that the Si-PUA/pigment hybrid latex particles yielded similarly good values in terms of color strength, and dry- and wet-rubbing fastness to the PDMS-free hybrid latex particles. Furthermore, use of the Si-PUA/pigment hybrid latex avoided certain problems related to printed fabric, such as poor air permeability and softness.

scholarly journals Low Temperature Curable Polyaniline/Bio-based polybenzoxazine Coated Cotton Fabric with Superior UV shielding and Oil-water Separation behaviours

2021 ◽  
Author(s):  
Prabunathan P ◽  
M. Alagar
Keyword(s):  
Low Temperature ◽  
Cotton Fabric ◽  
Separation Efficiency ◽  
Curing Temperature ◽  
Water Separation ◽  
Surface Protection ◽  
Uv Shielding ◽  
Oil Water Separation ◽  
Oil Water ◽  
Coated Cotton

Abstract The present work detailsabout the low temperature curingbehaviour of bio-benzoxazine (C-ddm) prepared using cardanol and diaminodiphenylmethane (ddm)in the presence of polyaniline (PANI). Interestingly, it was found that the curing temperature (Tp) of the benzoxazine monomer (C-ddm) has significantly reduced to 227 ºC from 271 ºC with the incorporation of 2wt% of PANI. The plausible curing mechanism of benzoxazine ring catalysed by PANI was also discussed. Further, the resulted PANI/poly(C-ddm) matrices possessa marginally improvedvalues of glass transisition temperature and char yield. Further, PANI/poly(C-ddm) coated cotton fabric was studied for its UV shielding and surface properties. Furthermore, the UV shielding and surface behaviours of PANI/poly(C-ddm) coated cotton fabrics were explored. The PANI/poly(C-ddm) coated cotton fabric delivered UPF rating as high as 50 + and water contact angle value of162°. In addition, the PANI/poly(C-ddm) coated cotton fabric wasverified for its oil-water separation behavior. It was observed that the PANI/poly(C-ddm) coated cotton fabric offered97.5 % separation efficiency with enhanced flux value of about 6450 L/m2h flux.Thus, the obtained results suggest that the PANI/poly(C-ddm) can be used some of the industrial and environmental surface protection applications.

Study on Finishing of Cotton Fabric by Sericin and its Properties

2011 ◽  
Vol 175-176 ◽  
pp. 624-628 ◽  
Author(s):  
Tie Ling Xing ◽  
Jie Liu ◽  
Guo Qiang Chen ◽  
Jia Yong Sheng ◽  
Dao Quan Sun ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Catalyst Concentration ◽  
Ph Value ◽  
Breaking Strength ◽  
Crosslinking Agent ◽  
Specific Property ◽  
Curing Temperature ◽  
Wear Property ◽  
Moisture Regain ◽  
Recovery Angle

In order to take the advantage of the specific property of sericin to improve wear property of cotton fabric, cotton fabric was finished with sericin. Sericin was fixed onto the surface of cotton fabric in the presence of poly-carboxylic acids (CA and BTCA) at high temperature using a pad-dry-cure process. The effects of catalyst concentration, pH value, curing temperature and curing time on the finish were investigated. The optimized finishing conditions for cotton fabric were obtained. The weight gain of treated fabric with BTCA as crosslinking agent was higher than CA. The whiteness, breaking strength, moisture regain, permeability to gas and crease recovery properties of treated fabrics were measured. The results showed that wrinkle recovery angle evidently increased, and the wrinkle recover angle of BTCA combined secrin treated fabric was higher than CA. The breaking strength, moisture regain and whiteness of the treated fabric slightly decreased, the permeability to gas of cotton fabrics were not changed.

The Use of Ultrasound in Bio-Treatment of Jute Yarn with Laccase Enzyme

2019 ◽  
Vol 12 (4) ◽  
pp. 275-286
Author(s):  
Ali A. Zolriasatein
Keyword(s):  
Tensile Strength ◽  
Reaction Times ◽  
Complete Removal ◽  
Jute Fiber ◽  
Light Fastness ◽  
Color Strength ◽  
Yellowness Index ◽  
Laccase Enzyme ◽  
Enzymatic Delignification ◽  
Jute Yarn

Background and Objective: Jute fiber is highly sensitive to the action of light. Significant features of the photochemical changes lose its tensile strength and develop a yellow color. It has been proved that the phenolic structure of lignin is responsible for the yellowing of jute fiber. In order to remove lignin, jute yarns were treated with laccase enzyme in different treatment times and ultrasonic powers. Lower whiteness index and higher yellowness index values were obtained by the laccase-ultrasound system in contrast to conventional laccase treatment. Methods: The laccase enzyme which entered the fibers by applying ultrasound, decreased the tensile strength while the loss in tensile strength was lower at high ultrasound intensities. FT-IR spectrum showed that the band at 1634 cm-1 assigned to lignin completely disappeared after laccase treatment in the presence of ultrasound. The absence of this peak in the laccase-ultrasound treated jute yarn suggests complete removal of lignin. Change in the morphology of fibers was observed by SEM before and after enzymatic delignification. The laccase-ultrasound treated yarns showed a rougher surface and more porosity. On the other hand, it was more effective in fibrillation of the jute fibers than the conventional method. Finally, bio-treated jute yarns were dyed with basic and reactive dyes. Results: The results indicated that at low intensities of ultrasound and relatively long reaction times, lignin can be more effectively removed and dye strength (K/S) increased to a higher extent. Laccase-ultrasound treatment increased the color strength by 33.65% and 23.40% for reactive and basic dyes respectively. Conclusion: In the case of light fastness, the conventional laccase treated yarns provided better protection than laccase-ultrasound treated yarns.

scholarly journals Compressive Strength Gain Behavior and Prediction of Cement-Stabilized Macadam at Low Temperature Curing

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yongli Xu ◽  
Guang Yang ◽  
Hongyuan Zhao
Keyword(s):  
Compressive Strength ◽  
Low Temperature ◽  
Curing Temperature ◽  
Strength Development ◽  
Construction Process ◽  
Strength Gain ◽  
Estimation Model ◽  
Maturity Method ◽  
Temperature Ranges ◽  
Natural Temperature

For cement-based materials, the curing temperature determines the strength gain rate and the value of compressive strength. In this paper, the 5% cement-stabilized macadam mixture is used. Three indoor controlled temperature curing and one outdoor natural curing scenarios are designed and implemented to study the strength development scenario law of compressive strength, and they are standard temperature curing (20°C), constant low temperature curing (10°C), day interaction temperature curing (varying from 6°C to 16°C), and one outdoor natural temperature curing (in which the air temperature ranges from 4°C to 20°C). Finally, based on the maturity method, the maturity-strength estimation model is obtained by using and analyzing the data collected from the indoor tests. The model is proved with high accuracy based on the validated results obtained from the data of outdoor tests. This research provides technical support for the construction of cement-stabilized macadam in regions with low temperature, which is beneficial in the construction process and quality control.

scholarly journals Established an eco-friendly cotton fabric treating process with enhancing anti-wrinkle performance

2021 ◽  
Vol 16 ◽  
pp. 155892502110034
Author(s):  
Xiongfang Luo ◽  
Pei Cheng ◽  
Wencong Wang ◽  
Jiajia Fu ◽  
Weidong Gao
Keyword(s):  
Tensile Strength ◽  
Citric Acid ◽  
Cotton Fabric ◽  
Crosslinking Agent ◽  
Cost Effective ◽  
Waterborne Polyurethane ◽  
Cotton Fabrics ◽  
Wrinkle Resistance ◽  
Before And After ◽  
Strength Retention

This study establishes an eco-friendly anti-wrinkle treating process for cotton fabric. Sodium hydroxide-liquid ammonia pretreatment followed by 6% (w/w) PU100 adding citric acid pad-cure-dry finishing. In this process, citric acid (CA) was used as the fundamental crosslinking agent during finishing because it is a non-formaldehyde based, cost-effective and well wrinkle resistance agent. Environmental-friendly waterborne polyurethane (WPU) was used as an additive to add to the CA finishing solution. Six commercial WPUs were systematically investigated. Fabric properties like wrinkle resistance, tensile strength retention, whiteness, durable press, softness, and wettability were well investigated. Fourier transform infrared spectra and X-ray diffraction spectra were also measured and discussed before and after adding waterborne polyurethane. Tentative mechanism of the interaction among the WPU, CA, and modified cotton fabrics is provided. The effect of cotton fabric pretreatment on fabric performance was also investigated. After the eco-process’s treatment, the fabric wrinkle resistant angle was upgraded to 271 ± 7°, tensile strength retention was maintained at 66.77% ± 3.50% and CIE whiteness was elevated to 52.13 ± 3.21, which are much better than the traditional CA anti-wrinkle finishing based on mercerized cotton fabrics. This study provides useful information for textile researchers and engineers.

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